Abstract: In a wireless communication system, a method and system for a hardware accelerator for implementing the f9 integrity algorithm in WCDMA compliant handsets are provided. Intermediate variables may be initialized in an integrity function and a first processing block of bits and at least one additional processing block of bits may be generated for the integrity function from a padded string generated from input variables. Values for a first and a second processing variable may be generated for each processing stage based on a corresponding processing block of bits and on immediately generated previous first and second processing values. The first processing value may be generated utilizing a KASUMI operation after an indication that an immediately previous generated first processing value is available. An authentication code may be generated based on a last of the second processing values and a modified integrity key.

Abstract: A mobile phone device utilizing a first communications protocol and a second communications protocol, comprises: a first system having a general processor, a memory, a first communications system providing for the first communications protocol and utilizing a first communications protocol stack, and a first link; a second system having a dedicated communications accelerator providing for the second communications protocol and utilizing a second communications protocol stack, and a second link; wherein the first link and the second link are connected; and wherein the memory in the first system holds the first communications protocol stack and the second communications protocol stack.

Abstract: In a wireless communication system, a method and system for implementing an FI function in a KASUMI algorithm for accelerating cryptography in GSM/GPRS/EDGE compliant handsets are provided. An efficient implementation of the FI function may comprise a first substitution stage and a second substitution stage, where a 9-bit substitution circuit and a 7-bit substitution circuit may be used in each of the stages. A pipe register may be used to transfer and zero-extend an input to the 7-bit substitution circuit for processing with an output of the 9-bit substitution circuit. A first multiplexer and a second multiplexer may be used to select the inputs for the substitution circuits at each one of the substitution stages. A third multiplexer and a fourth multiplexer may be used to select subkeys for encryption during the first substitution stage and zero value signals during the second substitution stage.

Abstract: In a wireless communication system, a method and system for implementing an FO function in a KASUMI algorithm for accelerating cryptography in GSM/GPRS/EDGE compliant handsets are provided. An efficient implementation of the FO function may comprise circuitry provided for a pipeline state machine, an FI function, a controller, a pipe register, and an XOR operation. Signals may be generated to control each round of FI processing and to indicate when each round is complete. The pipeline state machine may provide data input and subkey to the FI function for processing. A first and a second round FI processing outputs may be transferred to the pipe register. The second round output may be clocked from the pipe register to generate a portion of the FO function output and may also be XORed with a third round output of FI processing to generate the remaining portion of the FO function output.

Abstract: In a wireless communication system, a method and system for hardware accelerator for implementing the f8 confidentiality algorithm in WCDMA compliant handsets are provided. Input variables may be initialized in a keystream generator and an intermediate value may be generated with a confidentiality key parameter and a key modifier. The number of processing blocks of output bits may be based on the length of the input bitstream. The processing blocks of output bits may be generated utilizing a KASUMI operation and may be based on an immediately previous processing block of output bits, the intermediate value, and an indication of the current processing block of output bits. The processing blocks of output bits may be generated after an indication that an immediately previous processing block of output bits is available. The keystream generator may indicate when a first and any additional processing blocks of output bits have been determined.

Abstract: In a wireless communication system, a method and system for implementing the GEA3 encryption algorithm for GPRS compliant handsets are provided. An intermediate value may be generated based on initialized input variables, a cipher key and a key modifier. A first processing block of output bits may be generated by a keystream generator from the intermediate value, the cipher key, and an indication of the processing block of output bits being processed. Additional processing blocks of output bits may also be generated by the keystream generator based on an immediately previous processing block of output bits, the intermediate value, the cipher key, and an indication of the processing block of output bits being processed. A restart signal may indicate that subsequent processing blocks of output bits may be generated by the keystream generator by utilizing the same cipher key and the generated intermediate value.

Abstract: In a wireless communication system, a method and system for implementing the A5/3 encryption algorithm for GSM and EDGE compliant handsets are provided. Input variables may be initialized in a keystream generator and an intermediate value may be generated with a cipher key parameter and a key modifier. A number of processing blocks of output bits may be determined based on a number of bits in an output keystream. The processing blocks of output bits may be generated utilizing a KASUMI operation and may be based on an immediately previous processing block of output bits, the intermediate value, and an indication of the processing block of output bits being processed. The processing blocks of output bits may be generated after an indication that an immediately previous processing block of output bits is available and may be grouped into two final blocks of output bits in the output keystream.

Abstract: A method of presenting a selected portion of graphical images within a wireless terminal that includes receiving an original graphical image, having a source resolution, to be presented on a display screen. The native pixel resolution of the display screen may differ from that of the original graphical image. A complex decimation pattern when applied to the selected portion of the image allows the selected portion of the original graphical image to be resized from the source resolution to a decimated resolution operable to be displayed within the native resolution of the display screen. Decimated pixels need not be further processed to reduce the processing requirements imposed on the system processor. Operations normally associated with the decimated portions of the image may be offloaded from the processing module to improve system efficiency.

Abstract: Various embodiments are disclosed relating to a self-scan programmable keypad interface. In an example embodiment, an apparatus is provided that includes a processor, and a keypad interface circuit. The keypad interface circuit may include a detection circuit to detect when one or more keys of a keypad have been pressed, a scan circuit adapted to generate signals for keypad scan to identify one or more keys that have been pressed, a debounce circuit to debounce signals, and a key status register adapted to store a status of one or more keys of the keypad obtained during keypad scan. The processor is adapted to read contents of the key status register to identify one or more pressed keys upon receiving a signal from the keypad interface circuit.

Abstract: A method of presenting a selected portion of graphical images within a wireless terminal that includes receiving an original graphical image, having a source resolution, to be presented on a display screen. The native pixel resolution of the display screen may differ from that of the original graphical image. A complex decimation pattern when applied to the selected portion of the image allows the selected portion of the original graphical image to be resized from the source resolution to a decimated resolution operable to be displayed within the native resolution of the display screen. Decimated pixels need not be further processed to reduce the processing requirements imposed on the system processor. Operations normally associated with the decimated portions of the image may be offloaded from the processing module to improve system efficiency.

Abstract: A method of presenting graphical images within a wireless terminal that includes receiving an original graphical image, having a source resolution, to be presented on a display screen. The native pixel resolution of the display screen may differ from that of the original graphical image. A complex decimation pattern when applied to the image allows the original graphical image to be resized from the source resolution of the original graphical image to a decimated resolution operable to be displayed within the native resolution of the display screen. Decimated pixels need not be further processed to reduce the processing requirements imposed on the system processor. Operations normally associated with the decimated portions of the image may be offloaded from the processing module to improve system efficiency.

Abstract: Various embodiments are disclosed relating to a self-scan programmable keypad interface. In an example embodiment, an apparatus is provided that includes a processor, and a keypad interface circuit. The keypad interface circuit may include a detection circuit to detect when one or more keys of a keypad have been pressed, a scan circuit adapted to generate signals for keypad scan to identify one or more keys that have been pressed, a debounce circuit to debounce signals, and a key status register adapted to store a status of one or more keys of the keypad obtained during keypad scan. The processor is adapted to read a contents of the key status register to identify one or more pressed keys upon receiving a signal from the keypad interface circuit.

Abstract: A method of presenting a selected portion of graphical images within a wireless terminal that includes receiving an original graphical image, having a source resolution, to be presented on a display screen. The native pixel resolution of the display screen may differ from that of the original graphical image. A complex decimation pattern when applied to the selected portion of the image allows the selected portion of the original graphical image to be resized from the source resolution to a decimated resolution operable to be displayed within the native resolution of the display screen. Decimated pixels need not be further processed to reduce the processing requirements imposed on the system processor. Operations normally associated with the decimated portions of the image may be offloaded from the processing module to improve system efficiency.

Abstract: In a wireless communication system, a method and system for a hardware accelerator for implementing the f9 integrity algorithm in WCDMA compliant handsets are provided. Intermediate variables may be initialized in an integrity function and a first processing block of bits and at least one additional processing block of bits may be generated for the integrity function from a padded string generated from input variables. Values for a first and a second processing variable may be generated for each processing stage based on a corresponding processing block of bits and on immediately generated previous first and second processing values. The first processing value may be generated utilizing a KASUMI operation after an indication that an immediately previous generated first processing value is available. An authentication code may be generated based on a last of the second processing values and a modified integrity key.

Abstract: In a wireless communication system, a method and system for hardware accelerator for implementing the f8 confidentiality algorithm in WCDMA compliant handsets are provided. Input variables may be initialized in a keystream generator and an intermediate value may be generated with a confidentiality key parameter and a key modifier. The number of processing blocks of output bits may be based on the length of the input bitstream. The processing blocks of output bits may be generated utilizing a KASUMI operation and may be based on an immediately previous processing block of output bits, the intermediate value, and an indication of the current processing block of output bits. The processing blocks of output bits may be generated after an indication that an immediately previous processing block of output bits is available. The keystream generator may indicate when a first and any additional processing blocks of output bits have been determined.

Abstract: A method of presenting a selected portion of graphical images within a wireless terminal that includes receiving an original graphical image, having a source resolution, to be presented on a display screen. The native pixel resolution of the display screen may differ from that of the original graphical image. A complex decimation pattern when applied to the selected portion of the image allows the selected portion of the original graphical image to be resized from the source resolution to a decimated resolution operable to be displayed within the native resolution of the display screen. Decimated pixels need not be further processed to reduce the processing requirements imposed on the system processor. Operations normally associated with the decimated portions of the image may be offloaded from the processing module to improve system efficiency.

Abstract: In a wireless communication system, a method and system for implementing the GEA3 encryption algorithm for GPRS compliant handsets are provided. An intermediate value may be generated based on initialized input variables, a cipher key and a key modifier. A first processing block of output bits may be generated by a keystream generator from the intermediate value, the cipher key, and an indication of the processing block of output bits being processed. Additional processing blocks of output bits may also be generated by the keystream generator based on an immediately previous processing block of output bits, the intermediate value, the cipher key, and an indication of the processing block of output bits being processed. A restart signal may indicate that subsequent processing blocks of output bits may be generated by the keystream generator by utilizing the same cipher key and the generated intermediate value.

Abstract: In a wireless communication system, a method and system for implementing the A5/3 encryption algorithm for GSM and EDGE compliant handsets are provided. Input variables may be initialized in a keystream generator and an intermediate value may be generated with a cipher key parameter and a key modifier. A number of processing blocks of output bits may be determined based on a number of bits in an output keystream. The processing blocks of output bits may be generated utilizing a KASUMI operation and may be based on an immediately previous processing block of output bits, the intermediate value, and an indication of the processing block of output bits being processed. The processing blocks of output bits may be generated after an indication that an immediately previous processing block of output bits is available and may be grouped into two final blocks of output bits in the output keystream.

Abstract: A method of presenting a selected portion of graphical images within a wireless terminal that includes receiving an original graphical image, having a source resolution, to be presented on a display screen. The native pixel resolution of the display screen may differ from that of the original graphical image. A complex decimation pattern when applied to the selected portion of the image allows the selected portion of the original graphical image to be resized from the source resolution to a decimated resolution operable to be displayed within the native resolution of the display screen. Decimated pixels need not be further processed to reduce the processing requirements imposed on the system processor. Operations normally associated with the decimated portions of the image may be offloaded from the processing module to improve system efficiency.

Abstract: A method of presenting graphical images within a wireless terminal that includes receiving an original graphical image, having a source resolution, to be presented on a display screen. The native pixel resolution of the display screen may differ from that of the original graphical image. A complex decimation pattern when applied to the image allows the original graphical image to be resized from the source resolution of the original graphical image to a decimated resolution operable to be displayed within the native resolution of the display screen. Decimated pixels need not be further processed to reduce the processing requirements imposed on the system processor. Operations normally associated with the decimated portions of the image may be offloaded from the processing module to improve system efficiency.